Gun sight



Btw-233 0R 196189225 SR Feb. 2z, 1927. 1,618,225

J. H. REDFIELD GUN SGHT Filed Feb. '7. 1925 'WM ,Y

INVENTOR.

ATTORNEY.

Patented Feb. 22, 1927.

UNITED STATES JOHN H. REDEIELD, 0F DENVER, COLORADO.

GUN SIGHT.

Application led February 7, 1925. Serial No. 7,601.

This invention relates to sights for guns, more particularly of the typein which the sight is surrounded b-y a cylindrical shield, carried on adove-tailed base which is arranged to be forced into the usualdovetailed sight slot in the gun barrel. As heretofore manufactured, theshield and base were either milled from a solid piece of metal, themilling operation on the article necessarily being very intricate andcostly, or the shields were secured to the base by screws. The lattermethod is also comparatively expensive to manufacture and the screwswere liable to become loosened by the constant recoil of the gun.

The principal object ofthis invention is to provide a gun sight of thischaracter which will avoid the above noted costly methods and which willprovide a secur and permanent construction.

A further object of the invention is to provide a convertible sight,that is, one which may be used as a pin-ball sight or changed to anaperture sight as desired, which will be so constructed that the sightwill be maintained in a vertical position regardless of any loosenessoccasioned by wear at the pivot point.

.A still further object is to construct a convertible device of thischaracter in which a pin-ball sight may be interchanged with an aperturesight in such a manner that the tip of the ball will align with theposition occupied by the lower edge of the aperture.

Other objects and advantages reside in the detail construction of theinvention, which result in simplicity, economy, and efficiency, andwhich will become more apparent from the following description.

In the following detailed description of the invention reference is hadto the accompanying drawing which forms a part hereof. Like numeralsrefer to like parts in all views of the drawing and throughout thedescription.

In the drawing:

Fig. 1 illustrates the muzzle of a gun barrel with my improvement inplace thereon.

Fig. 2 is an enlarged vertical cross section taken on the line 2 2, Fig.1, illustrating the construction of a simple pin-ball sight employing myimprovement.

Fig. 3 is a longitudinal section taken on the line 3 3, Fig. 2.

Fig. 4 is a cross section through a sight in which my improvedconstruction is embodied and which is provided with a convertible sight.

Fig. 5 is a longitudinal section taken on the line 4 4, Fig. 4.

Fig. 6 is a perspective detail view illustrating the component parts ofthe device as illustrated in Figures 1, 2 and 3.

Fig. 7 illustrates a perspective detail view of the parts employed inthat form of a device illustrated in Figs. 4 and 5.

Fig. 8 is an exaggerated cross section through the device illustratingthe clamping action of the retaining pin.

In Fig. 1 the illustration is substantially actual size. In theremaining gures, the device has been enlarged to facilitate theillustration.

Let the numeral 8 designate a gun barrel containing one of the usualdove-tail sight groove 9. The invention comprises a shield 10, which maybe manufactured from tubing or can be turned in a lathe. The shield 10rests in a base 11, the upper side of which is concave to receive theshield 10. The lower edge of the base 11 is dove-tailed so that the basemay be driven in and secured to the dove-t-ail sight groove 9. A sight12 is arranged within the shield 10.

The device is assembled by passing the sight 12, from without, through awedgeshaped slot 13 cut in the shield 10. The base of the sight 12 iswedge-shaped, as illustrated at 14, Fig. 6, so that it will fit snuglyinto the slot 18, with its lower edge in alignment with the outersurface of the shield 10. The base 11 is provided with pin holes 15,which register with a pin hole 16 in the shield 10, and a pin hole 17 inthe sight 12.

lVhen the sight 12 is in place in the shield and the shield is in placeon the base 11, a pin 18 is passed entirely through the holes 15, 16 and17, as illustrated in Fig. 2, thus firmly locking all of the componentparts together. This method of consrtuction eliminates thel use ofscrews, rivets, etc., and also eliminates the necessity of forming thebase 11 and the shield 10 of an integral solid block.

The hole 15 is drilled at a slightly downward angle, so that the pin 18will be forced against the lower portion of the hole 16. Thisconstruction will act to bow the pin 18 downward at its center, asillustrated in Fig. 8, and causing it to draw the various parts intoclose Contact and firmly locking the pin in place. This bowing of thepin is eX- ceedingly slight but sufficient to clamp t-he partspermanently together.

In Figs. 4, 5 and 7, I have illustrated a novel convertible sight whichalso embodies the novel features of construction previously described.In this form, the base, shield, and sight are secured together by thepin 18 as in the preceding form. The base, however, which we willdesignate by the numeral 19, carries two pivot lugs 20 milled from themetal of the base. The pivot lugs 2O are pierced by pivot openings 25.Between the lugs 20 an arcuate depression or slot 21 is milled, alongthe length of which a leaf spring 22 is placed. Arranged to fit betweenthe lugs 2O is a convertible sight member 23. The slot in the shield 10,designated by the numeral 24, is widened so as to fit over the lugs 20.

In assembling this form, the shield is placed upon the base with thelugs 2O projecting within the shield as illustrated in Figures 4 and 5.The spring 22 is placed over the slot 21, the sight member 23 is placedupon the spring 22, and the pin 18 is driven through the openings 16 inthe shield 10, openings 25 in the lugs 20, and through the pivot opening26 in the sight member 23. Thus a single pin serves to secure the fourparts of the device together, and also serves as a pivot pin for theconvertible sight member 23.

The sight member 23 carries an aperture 28 and a. ball 29 arranged atright angles to each other. Two substantially fiat surfaces 27 areformed on the sight member 23,

against which the spring 22 contacts to main-r tain the sight member 23vertical in either t-he ball or aperture positions. If the sight memberis rotated from one position to the other, the spring 22 will bedepressed downward into the slot 21 and will allow the sight to berotated. It is desired to call attention to the fact that the spring 22constantly clamps the sight member against its pivot pin 18 so that thesight will be held rigidly vertical regardless of wear or play at thepivot point.

lVhen the device is assembled, the position of the spring 22 is belowthe inner surface of the shield 10, as illustrated in Fig. 5, so thatthe spring 22 will be held against longitudinal movement. The pin-ballsight 29 is of sufficient length from the pivot hole 26 so that the topof the ball will align with the position Jformerly occupied by thebottom of the aperture in the aperture sight 28. This constructionallows a bead to be drawn on the target either through the aperture orpin-ball without it being necessary to adj ust the height of the sightwhen changing from one style of sight to the other. Convertible sightsat present on the market are so constructed that the ball when broughtinto position will cover the space formerly occupied by the aperture.This made it necessary to adjust the height of the sights on the gunaccording to the style of sight being used.

It is, of course, apparent to those skilled in the art, that thestationary pin ball sight of Figs. 2, 3 and 6 could be replaced by astationary aperture sight, as illustrated in broken line in Fig. 8.

It is also within the skill of one skilled in the art to apply the bentor clamped pin principle, illustrated in Fig. 8, to the convertiblesight of Figs. 4, 5 and 7, and, since the principle operates similarlyand equally well with either type of sight, further illustration thereofis deemed unnecessary.

While a specific, form of the invention has been described, andillustrated herein, it is desired to be understood that the same may bevaried, within the scope of the appended claims, without departing fromthe spirit of the invention.

I-Iaving thus described the invention, what I claim and desire securedby Letters Patent isz- 1. The combination, with a gun sightcomprising asight member, a shield surroundingsaid sight member and a basesupporting said shield, of a pin passed through said base, shield, andsight member, said base, shield, and sight member being constructed sothat removal of said pin will permit entire disconnection of the parts.

2. A gun sight comprising a base having a concave upper face and adove-tailed lower face; an open-ended cylinder havin a slot therein andarranged to rest in sai concave face, a sight member arranged to rest onsaid concave face and project through said slot into said cylinder, anda pin arranged to be forced ,through alined apertures lin said base,said cylinder and said sight member.

,3. A gun sight comprising a base having a 4concave upper surface; lugsprojecting upwardly from said concave surface, a shield arranged to reston said concave surface and having an opening to it over said lugs; asight member carried between said lugs and a pin extending through saidbase, said lugs, said shield and said sight member.

4. The combination, with a gun sight comprising a sight member, a shieldsurrounding said sight member and a base supporting said shield, of apin arranged to pass through substantially aligned apertures in saidbase, shield, and sight member, and adapted to secure same together; theapertures in said shield and said base for the reception of said pinbeing slightly out of alignment so as to cause said pin to exert aclamping action upon the respective parts.

ture sight and a ball sight substantially at right angles to each other,said aperture and ball sights being arranged so that the length from thepivot point to the top of the ball 5 is substantially equal to thelength from the pivot point to the bottom of the aperture. 6. A gunsight having a pivot pin a sight member pivotally mounted on said pivotpin, said sight member carrying a perforated sight and an imperforatesight substantially 10 at 90 to each other, the length of saidimperforate sight from said pivot pin to eX- tremity being equal to thedistance from said pvot pin to the near side of said perforation.

In testimony whereof, I affix my signature.

' JOHN H. REDFIELD.

